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UNIVERSITI SAINS MAIAYSIII Sidang Akademik 1 ... - ePrints@USM

UNIVERSITI SAINS MAIAYSIII Sidang Akademik 1 ... - ePrints@USM

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-9- IEBB 512/3I<br />

liil<br />

Merujuk kepada keratan tersebut, hitung kadar (ikut berat) fasafasa<br />

yang wujud dalam suatu aloiyang mengandungi SGa - 30 As<br />

- 45Za (at %) pada suhu keseimbangan 70oC.<br />

By reference to this sectian calculate the proportions by weight of<br />

the phases present in an allay containing 5 Ga-30 As-45 Zn {at%)<br />

equitibrated at 7AoC.<br />

(30 markah)<br />

I<br />

'oo<br />

I<br />

cl<br />

L{ 300,-<br />

9l<br />

:t /<br />

9r ./<br />

i'""[ ,/<br />

u<br />

t<br />

e<br />

tE<br />

roo<br />

coo<br />

{oo<br />

{<br />

I<br />

tTlo<br />

oL<br />

Go<br />

20 rc tc 30<br />

i:^a olfa,< tL:<br />

t00<br />

'oo Z^<br />

(b) ln<br />

ro lc<br />

to 40 to 60 70 iio eo roo<br />

lrtrn'c I otohr< .r.) l<br />

(o) Ge-Zn brrurr ttrtem<br />

(b) Zn-As binrtY tystem<br />

r23a'<br />

Dtrrla

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