rOMFiriFMTIA^I

/2.j^A^2Zs^^yjz:z.

RESTRICTED DATA This document contains restricted data as defined in the

Atomic Energy Act of 1954. Its transmittal or the dis­

closure of its contents in any manner to an unauthorized

person is prohibited.

P R A T T % W H I T N E Y A I R C R A F T

D I V I S I O N O F U N I T E D A I R C R A F T C O R P O R A T I O N

C ANEL

M I D D L E T O W N • C O N N E C T I C U T

CDNPIULNIliU

DISCLAIMER

This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency Thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

DISCLAIMER Portions of this document may be illegible in electronic image products. Images are produced from the best available original document.

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(3L) # « l l f oaolaroio * fpolinliioxy

(S)> HMO igpootifWiiBloi' <BWil.yiiiff » f inal

la Unt^ • 4.t» alio (0.3l)«

()|) Asm noetioa aao aotod ia miaprotooiod im^Lmm irimm tlie oSaA «ao 4i3foe«lar oiyoood to tlw 99*

flio imnr oi l statvo of tlw waaitti ooifW>4o ifxi^ULatlMi ppognw io

fUMo I*

in

ia y^*ltjB^^^^.,.. jlPjBt ^^M^BPi ^^EjE!fllMs(J!lr * dao^^w ap'^O'^* "/ipw^ mj^^m^umm^^^^^^^mi^^ ^^luF^mm ' ^ H ^ ^ ^ ^ ^ ^ ^ • ' ^ • P * •^^^^^••^•^ ^F^^'i^Nfry ••^pn^^RW^ M P W •^'^^•••^^a

«4I«

Wot, Mr* IN if* ftiJflaft

for pptiiaiaatr ^st§»3L fi§mm^m |rlor to laatalSctloa ta tte «e ^ra»Mata rig*

€teor«aUfle of ptaaMHort ^ iupa ia alMft aai ilaa of ao^iaat aaift iyiiaviii ia^^tesod

late t te mmtgti^m, ixMmAM l i » t teflroftia aia tatetai t^taattw^ fiwoi «te ataoft

•Ml* laanfl wmsk ttaao armtatna aniiJaiaaxy ti^falla. t te Matlaaate a^ll te •«**»'ii,**

dftBifiowtly^ roftaoat.

tea liitwfialat IMTftiCTaTttoo ia a^ldafiag ooeaiateBitlir lAi^ ftaaMll^' ia aiaNHPoA

5BP^ flM^flt II^Hf ^MMo^a %uadHH ^MiteuMi^ft 4tete 4kfti^h aHMUkY 4 4 M # MU^ 'dktiMk dftd^teaa^^aft^o ^ateilML'tl aa 111^^^ aaauidbS ^ ^ M Ij^a^tt

teoa idoKtifioft vitit a!9ooU'la Soto of awtel* Unf iB x wi# wyffltffogfojtifft aaalgmio

of aatortal fipoa flted iiff4 ^teif atatMrian la^<^aa teffa^ ao Iter, giiwB ao iafl&oitiiaaa

fi€ y y aS#dbfi.opit ilifHiraiiMiaa Aa iawiotlftation tea teon ati rtod to teteaalao

i MttiMif tte fteaiaili flooft&tliOai^ pmptiofilai!^ ms3A ladtetioa^ <Kff tte otartiag azaaiiai

teo aar offtet oo tte aiateaalitlltar of tte f laal pradast.

teHat. iitei.^tea « ygaiar iidartloaatf aad _a;iliHi«tat Qt^iauatlaa of tte ovoXuatlon

of iatwnaal lij^Hlaaate aad aoXmast oasylafa alwaoflf Itet awpaai taanaa, i)td.oli but a

vary lav oittalli^ tme lotaa?, aaa pvofnalila aa a aolvaat for Ixjteleaata « i l^ 90.

tevwral latomal lidaleaate a>a telag iavoatiiKted aa paaaiUo aiftatituftoo for tte

^EtiHraal dia luteioiata proaaetay aaad for teodt^fliteloatod pillata. Adaitioaa of

atefut S$ of e o ^ ale(A»l to 96 yaador roaaltod ia aaall iaeraaaoa ia tef»i tte grooa

aai oiatatod doaaitlaa. ftliglit oavtea 9iek««9 o^anrod and tte aaod for aa oxteraal

lidKrieoaty ttewii^ rodueod, aaa not fttUy oUataatod*

WfcftMJiili I M W » . * • « • • * • ^rfv

ftMteaat JliCp<4>'-ftf^

, To: Mr. L. M. Raring

Tab].a 1

S t a t u s of UC I r r a d i a t i o n Tes t ing

ICf/o Enricheid, 2200?

Capsule r.cjir.~:.';ion

FW26-ipO

151

152

153

15^

l6o

170

171

173

17^

l8i

190

191

192

195

196

Percent Carbon

5.2

5.3

5.3

5.3

5.3

5.3

5.0

5.0

5.3

5.3

4.8

4.8

4.8

4.8

4.8

4.8

Barrier

Ta

Ta

Ta

Ta

Ta

Ta

Kone

Kone

None

Kone

W

W

¥

¥

¥

¥

Pellet Densi-cy

93.8

95.2

94.3

95.2

-

95.9

97.0

97.0

95.1

95.1

93.5

92,9

92.9

92.9

-

-

Scheduled ExTDOSure

3,000

1,027

10,000

10,000

3,000

1,000

3,000

1,065

10,000

10,000

3,000

1,069

2,000

10,000

3,000

1,000

status

At f/ZTR

Evaluated

At KTR

At Ml'K

Pellets prepared

At MTR

At KTR

At Hot Lab.

A t I-ffl-t

At m?.

At I^WR

&>/aluaxed

At Hot Lab.

At LSR

Being Prepared

Beiuii Freparod

nflnfi i iantinfl i i iMi-f). - 4 -

Crtnfi1fiiontiBliiiR,D. C/)Lm - 5 / 7 7 Contract AT(30-l)-2789 Date: May 21 , 1963

1

: • • • • . . . . • • • • . . « • •

: J . : <• . .

Ooatraet AS(j(M.)"«7i9 tat • Mr. SM K. teriag tetet tear ftl^ 29 3

m fipofflmiaofitt A aai^la df fMN^apatteaiaad axaalaa aac^iia raooited tgm teltod

io^oar iMo aiibloitad to a oteatoiil wd aiadottug aatljraia. teiiOte of tte aaadeoi

aaidbHiia (talmlatad te^aa) aai^ tte fiSUSk aPMStftoatsaa far ataxtnat aMlMtlML.

Oi pia 9Qft*|jE}99 Sia

Mtjciftia iTMQd IPt

partielo aUso of «te aatiolaJL*

9g Drotofana teallittoat fte dtotea aaotenteal praaa* ocmtelaiBg aa iatt pnal maouun

eteoiter, and apMtSallar tealgioJ tmt MIUHK) ftel prodaetiQa» aaa raaaivod ia lata tereti.

fte aqLUipMROt ia teiag laateUad ia ^M Fual fatelcaitiOB Wbo^* frodiustioa puraaotaara

vUl te dataraiaad fte tte fiateleatioa of m collate aa teaa aa iaataUatioa la oooplotod.

jnpior to daUirarar, a viait aaa aado to tte fttokaB yilwt idiora tte o^aipMnt vao oteoi-vad

la oyaratioa aad vallate ^ Wi man ppomwd ia maao.

Wr ^9M^-W^ Pm^%^)m^ M^^^^ Out'«f-pUbt ooapitiUlitsr toatiiig of uvaaiaa oaxliite vitb eb*l Zr alloy aaa oostlaoad

aador two aota of ooaiitioaas (1) tetaaaa oonpitibilitgr coiq loo (mth aad vitteot

teoTiara) ooapriaiat aaall asoalaaaa of tte aatoriala la iatteate eontaot aitb aaeH

otter aad <2) tetwaoa f aal aad olad aatorlala alaulatiag tte a»av90 fuol $la eonflg-

aratloa aad toatod la a Utblia oavlrowMOt. teaUlta of tte oxporianita ovalmtod la

tMa parlod ore pr«Mmtad teloat

'"•' " ' "' enun - 5/7? teetteot Ai(|Mi|««?89

«9i. te. &. M. teriag tetet ter^^r aP3

tevtter tetiiaaa eb*% te i lar dai 91 dw^mcteat^ %.^ # teva aaa teaa taa for

-jKwviaaiiar raaBOttod date* irte*« a p*****! daailatetosi of tea (itmoaiitiialii'lini of daiaitiUar

I M H L ^ tefeuMlteft MHMUM^ ' ife ltel l M k i l % t e ^ d M H M M U M k HHUtJti ilUMi4feiteMMftA l^ft^telH twm^ateJJuaftiftMteftitah ^fad IJ^hM) iH^teJt 4Mlfete

ainmaiaiii'ia af tte taat ateavtela aftev fui'iiaiio taatdtei aw faaad te te ooteiiteaiit

terii^fe^t ' t hua "S^VIHlfil! ntfiMMfli' ^MMiA 1E>da 'PMUHte'SHl^di ttteMMMoNl^^^^l v^itea 4['MMte^l'4iwft('4dteh' aMteiMVte%<aiiL aBHEM^^M^aSflt

flteteKV^^diMi aa4P^ ^Mte^^i Stea '^katftKJIaaav teiHt^l^^fek da taWMite^Hft dSaMMiuft'C'dx^^B ^ifeteaufl^to'^uMn MdiMA4 '4tMMi' MMM 4^1iua 4MMd4t.J taft 4lteate'tf' Btf9^a

axa teiag (ititatwid ftea two aoaroaa* flite oagipoaite tete ai^ ppovSdo aa lapraaaaaat

emap laoao tw^fttten DKU aa k tefxt^r aad, la adSitiOQ aigr offte a oonaidoraMUi atewgte

advaatiuM*

teaarateialilaaati!^ lilip-C»-i te AUear tealtete^ot Xa aaotter taat, ftao aaaaiaa aaa

foxBod at tte iatorftea tetwaaa 96 (5*3^ oii?tea> aai 0b»l 2r alloy ia a 1900 tear at

saOQt* iigitfa l atewa arwitti foaotxatiea late tte 6b«l te olad te a dastb of apprtaci-

aatolor 10 aite» flda la aot eoaaiatoBt vltii otter toate ia i dloli oo aigaifloaat ra«

aetiooa vara <Aaorfad oater adailar oonAitioaa. Xt ia tteagiA ttet tte dagreo of aurfiaeo

eoetaet ia iivertaat. Vtexa olaao ooteaet aaciatef a tela layor of ^C ia fteaad oa

tte olad aarlteo ia ooateot vitb tte 90. fiiia layor 9jg!gmam te amtm aa a terrier te

tte diffaaioa of araaiiai* B9«av«», tte pfaeUeal eooolaaixm te te dxaaa firaa tte

rmnate aa iUaltwtod la yi#»a 1 te ttet oaeoaa eartea (aa %G ) oaaaet te dafeadod

i QB te pravoat aarlote reaetioo aite €6*1 te allay olad.

p«fcti|f gaa^adt teog?atlMll^ aap«rteaate ateotetlag m»-?0 ftel | ^ eooflgaratloaa

vara rasiovod ftea toat aftor 3000 teura at SSO( ia a Uthiaa aayiroaaeat. fteae toate

roppoaont eeatlBuatiOB of ite liOQO tear toate roportod ia fSM!*^.

fte teal ate te9«teteteiittetefte {$.9$ 9> altli tete tera eb-l » alad aad taatelna*

llaad te^ te ated. A i ^ diaaatar tete aaa dxUlad teiaotfi tea alad of oao telf

Pt tte iq^aeiaate piter te teat te parait Utei«a laaatxaklaa daaii^ teat, f te puiioaa

Of tete aaa te aaaaaa t te teteat af litteaa tectefa aa tte lateiaatiaa teteaaa tte

alad aad ftel* tete otealaaft ftea tedli tte IftOO and 3900 tear taate axa aaa^Uad te

telbiai. Wipra t te a itedte|iteil|i|tetelBaitetelay aarteoo of ytoa aftar aayouBPO Ite

$100 tetaara at tflftftf, Anaag tte algwtfiaaat fol i !^ darlirod fraa tte aaalyate axas

texa gfeiif. J f Allaart MU» IftpO te«ara» oaly a aaall aama^ of aaatete

teaao aaa noted ant tte -flffjfH awfima alftte tte 3teO teaor taate ateaad

wteoly aoattaxad oM itete tteaiteteat tea tvSX alad ttecteMNMi. Sa ooa*

txaet te tea temllte ateaa te tMpaPa 1, ^bmm te ai^tter a aoiftea layer

of ISMC Bor (Miy avifttete (ny xailagMitey '^ aaaatea diffteiaa late tte

eauaad tgr diffteaaoiw te oaata^ eonditloaa tetaaau tte foal aad alad

Tte poattoat atraxtara of tea fateotod ptea, taatad for 1000 teaaa, te

lllaatratad te fli^xa 3* tete tte afgaraat v^O^mm iaeraaaa of tte

ftladding (ttiloteaaa iaeraaaad ftea atenit 22 alia te tetaoan 27 aad

kO aUa. Saa flgora 8d). tedtegra^ide aaalyaMi ateaad uxaaiaa tteoate

virtually t te aatixa olad ttiloteaaa of tete tte 1000 tear aad 3000 tear

teate.

-T-

To: Mr. L. M. Raring Contract AT(30-1)-2789 Date: May 21, I963

Table (2)

Su:!j:iary of IOI9 and 3OCO hour, 2200F Hyperstoichio .-.atric Uranium Carbide -Colurfoium-l Zr-Llthixim Corapatability Tests

Clad Attack Barrier Attack Fuel Carbide U

Cladding Cladding Ccvt-'bon Content (j ) Ce.rbido U Penetration Penetration Penetration ]•' .Yerial Condition Preb'is'iT' post'test PoaetVation (mlliy~ (mils) ~ (rnils)

1019 3000 (3) '-0"9 3000 1019 3000 1019 3000 1019 3000

'"*. ' * ^* i^' liE* '££.• Is* liE* ii£* 2i£* ISH'

• •"I Unlinod Cb-lZr Sound 5'1 5*0 - 0.5 Cornp. none none _ _ _ _

• ..'.•:Unlinod Cb-lZr Defected (2) 5.1 4.6 - Conp. Co::ip. Comp. Comp. _ - „ -

;'*•.'• Ta lined (2 mil) • • •

.•:••_ Cb-lZr Sound 5*2 5*2 - none none none none 1.0 2.0 none none

: Ta lined (2 mil)

. . ;Cb-lZr Defeated (2) 5-2 4.6 - nonc(l) comp. none comp. none(4) 0.5 Comp

':'.*.:' (avg.)

(1) Lithium attack to Columbium-1 Zr suspected Key: Comp. -• Complete

(2) 1/16" dia. hole drii].cd in one end of riin.

(3) Car':on analysis in process

('.-) Kcaci'.tjd zone ob;;orYod.

-8-

tet' Mr* &. M. iaxlag

C^Lth ~ 5777

It tearffil^ 19(3

r^^^^^^m^^^^^^^^^^^^^^^m^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^m^B^t^ m^^^^^" ^^^m^^^^^v^'^r^w^^^^^^^^^^^f ^^^m •^^^^a^i^^waaa^^^ • l e B ^^^aaPv'^^Ba^avaa^BH-

Taaatlaaa teteite 99 aad fttel te allay te Ulaatxated Iqr IXflwa i

diffteiaa tea aat pRpgvatead teyaai tte te*l te/iaadaitea telaateaa wid

te aa avidaaaa af uranlaa diffteiaa te t te fttel te idadU fte dafteted

taatad far 1090 teava. tiiummA «a iiiantiai difteatea I t e t te WO0 tear

ravaated figHnflttftt iwaiiliai dlftealaa late tte d9b*l te atlay ited*

taate ladiaated* at laaat, teat a taatelaa tetrvteir ^teatitely

xate af raaatioB tetaaaa te-l te aad 90 te tte praaaaaa af litteaa.

tte

mfSmSBaSBL

Iteadtetiaai teaadaatiott af tte fixat MOOr « i Inadiattea mm^» MftMlO, ahite

aaa texadtetad fte 1000 teoxa, ateaad ( l ) ao aaaUlag» ( t ) alltfA raaetloa aite tte

oteddlagf aad (3) tea fiai^laa gaa xalaate. toaiitaa fa i l , aftteli tea teaa Itead te te

affaattea te aliatnatlag tte teal-ated tetexaattea te aad<^«site taate, aaa aot uaad

te tete taat tert tea aiaaa teaa laoaxfoxatad te tte tefaitettea pngiaa. A aawaxy af

tte raaolte of tte yoat^lnadteUoa afalaafetea af wnMOQ te ptaiootad telov togatter

vite pravioaa taate fte eaagarlaoa*

tearioteoat (# 1^^} teaaity i$ tteMnteSaal} teii'iixi'

m&m^^ mtm^^ wskm^^ 93 90

93 91

2 9S

«J-<iS., teaalte.

y

Qaa teteaaa if) Ha flaalllat fual«eted teteraetioaa

tehU 3 te a atataa

1780

0.%

1990

0.a*UZ

aifto lOftO 1.1

of

0.1 3.3-5*1 2.5-3^

allgtie a l i ^ ali^te

fau 91 IxMdtetioa adtedate.

.S. •9- • • •• • • * • ««

« • *

To: Mr. L. M. Raring Contract AT(30-1)-2789 Date: May 21, 1963

Table (3)

S-catus of UT'I I r rad ia t ion Testing

Capsule Designation

PW26-2C0

201

210

'T'O'^

230

2 -"

2-:0

r ^ -

1 /

2^:3

244

250

251

Terip.

1750

2000

2200

2200

2200

2200

2200

2200

2200

2200

2200

2200

2200

Barrier

None

None

None

None

¥

¥

¥

¥

¥

¥

V,

¥

¥

Enrichur.ent

(. U-235)

93

93 •

30

10

10

10

10

10

10

10

10

10

10

Scheduled Exposure

390

1,600

1,000

3,000

1,000

3,000

10,000

4,000

6,000

8,000

1,000

1,000

3,000

Status

Evaluated

Evaluated

Evaluaxed

At I.:TR

kx, Hot Lab

At !.:TK

At I'TR

At .-TR

Pins Cc.plete

Pins Conplete

rlns Corrolcte

Be Lug Prepared

Being P.-epared

-10-

0Betxaat J9(9>^<«|89 fiftt te>. &* M. teKlag tetef ter «l» 39S3

paidar, prapapad %y tte lilAWib paaoate# te tetaaaa 30 aad aO gMaa te tteaa diQra*

texiMUda daa af tte lovtei' te ajjia nilaataTj 2 atevaaa. Aaalyaaa teov tSMm te

^^ ^^^^••^(•••^'^^•^•^r w^A " ft if ip^^^^^a^^^aa^' aa^^^^aa ^pa* awaa ^^M^^appwiaiaap ai^wpa aaaaxaavaiaiaapiaiaff^p apaaaaap mi^m ^(PXP wx^^apap Mm^m^^ ixwi ^^^BapaHp ^^H4wa

^^^^^^ (Bngr^^ ^(^^wa aaopea* app^^^a'a'Hp^^ a^aa^a ^paa^^aa ^aa^^MjMfc^j^^apaa apaiwa jwa^Hi raaaa ipa^WHHS ^^la j x ^ a i a a i ^ ^ 9aaiPP" ^iw^aa^^^M* aaip wdpiiwaa

^p ^^^ww ^p^p^w ^^wp ^^a^j^^^^v ^^t^a^^^^ m^^m^^ ^FP^^a a^^ea^pw^^a^waj^^ ^P^W ^axaaBi^a^p a^gp^^opap wwmtimmmm p aFaaaiH^Map ^awHsaawviaFap^^aa ^tt^i^^mmt^m^m a^

aatly iftioxa 9 ^ of tteooatioia, oaa te atetevad ty oolft pxaaalag aad «tat«riag.

9 i HfocanaaBtt k aaapla of 99 poadat tea teaa xaaoivod frea iteen aad ate||aetad te

a eteaieal xnd teataspiag aaalyate. fte ffaterf^fl tetevteor of ttea aatarlal tea teaa

spod - dMaltiaa oS 971 of tteexatleal tedag ateiavad ia aiMte of a ritetHNHy Mgb

^p^Oi^wpppp ^art^aai^^pa^^a aa^^pp^^ip Mn^paxa P aaaa^^^xpa^aaa ^^aaa ^sMHami^aiaaar^^^pMMi^ia a^a^^e^p^a ^a^^^a ^ipaw^^^pa. a ^ a a a • • • « apo^ap •wta^apa****

^a apw ipRp w aaa a * a ^m ip^HiPiWi^aia aiwgB^H|WaaB a a i M P t^^^^^wa a p * w^wiaaaaR a

9 i Ooafatihilitri BIffaaioB oouptea of araaiuB aoaoaltnte aad C1>*1 te aUay teve

a a a n^aaa ^m^^mt^^^m awpi^a* aaa^Haaa ^pxt^w^p^ai^^P^^n^aa^^^a ^ ^^^ap^ax^p^aiaaaa a^a^^P iiaaa*^^ppp^^^aFapab^pp^ ^^^p a^^a ^^^w ^P^^W^^^^P^^^W*^WP^^^^J

loMi ttea ttet of 99 at oaagaxaikte twmtiatutaa, aaaa aaall aaaaaxte of uxaaiua ia tte

olad te iotelaralila aad tea lad te tte evalaatioa of tenlor aatonate*

faqfrtaa terrtor teatextlowt fuagataa foite 1 a i l tMte tem teaa teaad te ofteet*

ivaly pravant tte tetoraetioa tetaaaa 99 aad eb*l te alloy for pffirlote of agi te

1100 tettva at 220ar aad 100 teura at 20009. Additiooal dlffaaioo ooaplaa of tteae

aaterlate axa iMdag prapaxad for a aore e«aplate avalaatlfia.

-U-

teatxaat liC30«l^'a7Q9 90} te. &. M. aiuni« tetet tey ^ 1963

p^aMHiMt v9-dlid^4^MHia flHaaHj^dia ^aaM^^^Mafd^da ^hai HkdlHa-'ftaadt aaa Miaaaia tfS aaa aiMXaaaaaaMt49^44uaiaa iH^m^ ^BM^^Jmmimli aaaiMa. dfe^HHriMhttpaadE

fte 11 fad la III an teaad agna attt"af pi I a aapartexatal date 4% te teUavad tted tteawgllt

iNS&ld aoteiteeteg of 99 a&te attev rafniataxy aaxtedaa aate te teG aad dlMly d ataifta

f M l aat 111 aay te ateteaad addte irtH xadaaa ftaatea gaa xateaaa aad jwdatTiljf aaalllag.

Oteyaaitjaaa dftteh a t l l te avateteai tealatef 99 aA» l»»9 ^/« te^i ^3 a/a 99*17 x^a f r ^

aad 71 xi a 99-9 • /» tee. fte laat aaigoattiaa, aaatelJi^ig tea Mitfwat aaaeaatxatiaa

of te^ a m teaa tte aaaa 9 teadla« aa 9%. t te aatteteated txxadiatttea aoediUoea axa

22909 far 1000 teoM. Mteartel fte tea fixat eapnOa (99 a/o 99 aad 9 n/a te9) te aov

aRa «Ht • fl^^^apat^p^aaw^aaa^w

•I2«

FIG 1

i j j i nn ih j i i j III

2598-170

Cb-1 Zr ALLOY COMPATIBILTY SPECIMEN

LEGEND

A -B -C -

CbC - 2 MILS Cb-U ALLOY - 8 MILS Cb2C PARTICLES

-A

-B

-C

CONDITIONS: STAIN-ETCHED MAGNIFIED: 100X

SHOWING REACTION BETWEEN URANIUM CARBIDE (5.3 W/O C) AND Cb-1 Zr ALLOY AFTER 1500 HOURS AT 2200F.

• • • •

URANIUM CARBIDE C b - 1 Zr ALLOY COMPATIBILITY SPECIMEN

( L I T H I U M ENVIRONMENT)

LEGEND

C - TANTALUM LINED DEFECTIVE PINS D - UNLINED DEFECTIVE PINS

A- TANTALUM LINED SOUND PINS B - UNLINED SOUND PINS

CONDITION: STAIN-ETCHED MAGNIFIED: lOOX

EXTERIOR OF Cb-1 Zr ALLOY FUEL PINS CONTAINING URANIUM CARBIDE (5.0-5.2 W/O C) AND EXPOSED 3000 HOURS AT 2200F IN A LITHIUM ENVIRONMENT.

• • • • • • • • • • • • •— • ••• • • f " " ^ / ^"" -»»

• • • • • • • • • • • • • • • A • / « • • • • • • " ' \ /

2666-18 FIG 3

Cb-1 Zr ALLOY vs.I URANIUM CARBIDE COMPATIBILITY SPECIMENS

(LITHIUM ENVIRONMENT)

LEGEND

A CbC B Cb-U ALLOY CONTAINING Cb2C PRECIPITATE C Cb-1 Zr ALLOY CONTAINING Cb2C PRECIPITATE

CONDITION: STAIN-ETCHED MAGNIFIED: lOOX

C

±

SHOWING THE EFFECTS OF THE PRESENCE OF LITHIUM ON THE REACTION BETOEEN URANIUM CARBIDE (5-1 W/O C) AND Cb-1 Zr ALLOY AFTER 1000 HOURS AT 2200F

t^m'm w » » w^"

URANIUM CARBIDE VS. TANTATUM-LINED Cb-1 Zr ALLOY

COMPATIBILITY SPECIMEN (LITHIUM ENVIRONMENT)

p^^^^ *<-mg^^^ 2 MIL Ta AND TaC -n o

C b - 1 Zr ALLOY

CONDITION: UNETCHED MAGNIFIED: 200X

ILLUSTRATING THE ABILITY OF TANTALUM TO PREVENT UC-Cb1 Zr INTERACTION AFTER 1000 HOURS EXPOSURE AT 2200F