预氧化对<strong>Co-Al-W</strong>基高温合金高温氧化和热腐蚀行为的影响

预氧化对Co-Al-W基高温合金高温氧化和热腐蚀行为的影响

高博,王磊,宋秀,刘杨,杨舒宇,千叶晶彦

Effect of Pre-Oxidation on High Temperature Oxidation and Corrosion Behavior of Co-Al-W-Based Superalloy

Bo GAO,Lei WANG,Xiu SONG,Yang LIU,Shuyu YANG,Akihiko CHIBA

表4 950-PreO预氧化Co-Al-W基高温合金在800和850 ℃腐蚀99 h后CoWO₄和Al₂O₃层厚度

Table 4 Mean CoWO₄ and Al₂O₃ scale thicknesses of Co-Al-W-based superalloy after 950-PreO treatment and hot corrosion at 800 and 850 ℃ for 99 h

Oxide scale	Primary stage	800 ℃	850 ℃
CoWO₄	0.88±0.48	0.93±0.29	0.98±0.24
Al₂O₃	0.89±0.22	1.16±0.40	1.01±0.39