作者: Henry Lada , Robert E. Fishter , Brian A. Manty
DOI:
关键词: Chemical milling 、 Etching (microfabrication) 、 Volume percent 、 Nuclear chemistry 、 Metallurgy 、 Molar ratio 、 Tungsten 、 Materials science 、 Superalloy
摘要: Chemical milling of cast superalloys having high tungsten contents is advantageously accomplished with an etchant which consists by volume percent 40-60 concentrated HNO 3 , 0.6-0.8 HF, .[.30.]..Iadd.40.Iaddend.-70 H 2 O, included at least 0.008 moles/liter CuSO 4 and 0.0016-0.025 FeCl . Preferably the molar ratio to 2:1 etching in range 50°-80° C.