文献类型：专利

英文题名：Composite ceramic coating used in aircraft engine nozzle and hydrocarbon cracking furnace tube, comprises manganese(III) chromate and chromium(III) oxide and is prepared by subjecting surface of superalloy material to degreasing

作者：LIU J;ZHANG K;BAO B;XU H

机构：[1]UNIV EAST CHINA SCI & TECHNOLOGY

申请号：CN107177815-A

申请日：2017-04-27

公开日：2017-09-19

语种：英文

收录：DERWENT

摘要：NOVELTY - Composite ceramic coating comprises manganese(III) chromate and chromium(III) oxide. USE - Composite ceramic coating used in aircraft engine nozzle and hydrocarbon cracking furnace tube (claimed). ADVANTAGE - The composite ceramic coating has improved carburization and ablation resistant performance and has reduced adhesion of carbon deposit. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing composite ceramic coating on surface of alloy, which involves : (A) subjecting surface of superalloy material to degreasing; (B) introducing inert gas and mixed gas carbonmonoxide-carbondioxide in heating furnace for 15-30 minutes; (C) performing oxidation reaction at 700-1200 degrees C for 5-40 hours; and (D) cooling to room temperature to obtain composite ceramic coating on surface of alloy.