冶金物理化學課后習題解答

2014.10.142021/6/2712021/6/2722021/6/2732021/6/2742021/6/2752021/6/2762021/6/2772021/6/2782021/6/2792021/6/27102021/6/27112021/6/27122021/6/27132021/6/27142021/6/27152021/6/27162021/6/27172021/6/27182021/6/27192021/6/27202021/6/27212021/6/27222021/6/27232021/6/27242021/6/27252021/6/27262021/6/27272021/6/27282021/6/27292021/6/27302021/6/27312021/6/27322021/6/27332021/6/27342021/6/27352021/6/27362021/6/27372021/6/27382021/6/27392021/6/27402021/6/27412021/6/27422021/6/27432021/6/27442021/6/27452021/6/27462021/6/27472021/6/27482021/6/27492021/6/27502021/6/27512021/6/27522021/6/27532021/6/27542021/6/27552021/6/27562021/6/27572021/6/27582021/6/27592021/6/27602021/6/27612021/6/27622021/6/27632021/6/27642021/6/27652021/6/27662021/6/27672021/6/27682021/6/2769相圖正誤的判定2021/6/2770相界線構筑規(guī)則：在二元系中，單相區(qū)與兩相區(qū)鄰接的界線延長線必須進入兩相區(qū)，不能進入單相區(qū)。或者說，單相區(qū)兩條邊界線的交角小于180°。相區(qū)鄰接規(guī)則的三個推論：1）兩個單相區(qū)相毗鄰只能是一個點，且為極點；2）兩個兩相區(qū)不能直接毗鄰，或被單相區(qū)隔開或被零變線隔開；3）單相區(qū)與零變線只能相交于特殊組成的點，兩個零變線必然被它們所共有的兩個兩相區(qū)分開。2021/6/27712021/6/2772L1+L2=βL=β+γL+β=αα1+α2=S1α=1’+S1α=S1+β說明：物質1共有三種晶型轉變，虛線為1和1’的晶型轉變線。2021/6/27732021/6/2774重心規(guī)則平行線2021/6/27752021/6/27762021/6/27772021/6/27782021/6/27792021/6/27802021/6/27812021/6/27822021/6/27832021/6/27842021/6/27852021/6/27862021/6/27872021/6/27882021/6/27892021/6/2790思考5-1什么是穩(wěn)態(tài)和準穩(wěn)態(tài)？說明它們的主要特征。2021/6/2791思考5-2是說明阿累尼烏斯公式中指前因子與活化能的物理意義。2021/6/27922021/6/27932021/6/27942021/6/27952021/6/27962021/6/27972021/6/27982021/6/27992021/6/27100思考6-5是說明有效邊界層理論的要點。2021/6/27101推導菲克第二定律（一維擴散）2021/6/271022021/6/271032021/6/271042021/6/271052021/6/271062021/6/271072021/6/271082021/6/271092021/6/271102021/6/271112021/6/271122021/6/271132021/6/271142021/6/271152021/6/271162021/6/271172021/6/271182021/6/271192021/6/271202021/6/271212021/6/271222021/6/271232021/6/271242021/6/271252021/6/271262021/6/271272021/6/271287-1穩(wěn)態(tài)法如何處理氣-固反應動力學問題的？使各步驟的速率相等，且等于總的反應速率。此時，各步驟的阻力都要考慮。2021/6/271297-2未反應核模型有哪些基本假設？1）固體反應物B是致密的或者無孔隙的；2）反應發(fā)生在氣-固相的界面上，即具有界面化學反應特征。2021/6/271307-3由外擴散、界面化學反應、內擴散控制的氣-固反應

各有什么動力學特點？2021/6/271312021/6/271327-4高溫冶金氣-液反應有什么共同的動力學特征？2021/6/271337-5試說明氣泡冶金去除鋼液中氣體及非金屬夾