放电等离子烧结Ni20Cr-xAl合金的高温氧化行为
刘丞济, 孙文瑶, 陈明辉, 王福会

High-Temperature Oxidation Behavior of Spark Plasma Sintered Ni20Cr-xAl Alloys
LIU Chengji, SUN Wenyao, CHEN Minghui, WANG Fuhui
表1 铸态和SPS制备Ni20Cr-xAl合金在900℃恒温氧化100 h的氧化增重(Δw)和氧化速率常数(kp)
Table 1 Δw and oxidation rate constant (kp) of the as-cast and SPSed alloys after oxidation at 900oC for 100 h
Alloy statexΔw
mg·cm-2
kp
mg2·cm-4·s-1
As-cast1.50.455.53 × 10-7
3.00.424.95 × 10-7
5.00.282.22 × 10-7
SPSed1.50.751.55 × 10-6
3.00.251.06 × 10-7
5.00.204.92 × 10-8