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采用APS制备了(Gd_(0.7)Sr_(0.3))ZrO_(3.35)涂层,将涂覆CaO-MgO-Al_2O_3-SiO_2(CMAS)的(Gd_(0.7)Sr_(0.3))ZrO3.35涂层以及(Gd_(0.7)Sr_(0.3))ZrO_(3.35)与CMAS混合粉末在1250℃分别热处理1,4,8和12 h。使用XRD和SEM分别对腐蚀产物的相组成、显微形貌进行分析。结果表明:(Gd_(0.7)Sr_(0.3))ZrO_(3.35)涂层抗CMAS腐蚀性能良好,原因是在腐蚀产物层内形成了由磷灰石相Ca2Gd8(SiO4)6O2和c-Zr O2组成的致密的阻碍层,有效地抑制了CMAS的进一步腐蚀。
The (Gd 0.7 Sm 0.3 ZrO 3 .35) coating was prepared by APS and the coating of (Gd 0.7 Sm 0.3 ZrO 3 .35) coated with CaO-MgO-Al 2 O 3 -SiO 2 (CMAS) (Gd 0.7 Sr 0.3) ZrO 3 (3.35) and CMAS powders were heat-treated at 1250 ℃ for 1, 4, 8 and 12 h, respectively. The phase composition and microstructure of the corrosion products were analyzed by XRD and SEM respectively. The results show that the corrosion resistance of (Gd 0.7 Sr 0.3) ZrO 3 coatings is good in the corrosion resistance of CMAS because of the formation of the apatite layer composed of apatite Ca 2 Gd 8 (SiO 4) 6 O 2 and c-Zr O 2 Dense barrier layer, CMAS effectively inhibit the further corrosion.