NiCrAlY+(ZrO_2+Y_2O_3)thermal barrier coating was prepared on the surface of refractory steel 1Cr18Ni9Ti with plasma spraying technique. The phases and microstructure of the thermal barrier coating were determined by ...NiCrAlY+(ZrO_2+Y_2O_3)thermal barrier coating was prepared on the surface of refractory steel 1Cr18Ni9Ti with plasma spraying technique. The phases and microstructure of the thermal barrier coating were determined by scanning electron microscopy(SEM) and X-ray diffraction(XRD). The results show that the bonding between thermal barrier coating and substrate is sound. The surface hardness of 1Cr18Ni9Ti reaches up to 1000 HV, but that of substrate is only 300HV. The patterns sprayed with CoNiCrAlY+(ZrO_2+Y_2O_3) ceramic coating have a good heat insulation effect at 800℃ for heat insulation temperature difference reaches 54℃, which increases the operating temperature and service life of refractory steel.展开更多
Outdated Capacity to Be Eliminated The iron and steel capacity has reached 660 million tons in China, but the actual market requirement is only 470 million tons, so the excess-capacity is 190 million tons. National De...Outdated Capacity to Be Eliminated The iron and steel capacity has reached 660 million tons in China, but the actual market requirement is only 470 million tons, so the excess-capacity is 190 million tons. National Development and Reform Commission of China declared the new capacity and expansion capacity in iron and steel industry will not be authorized. 400 m^3 or below blast furnaces and converters and 30 t or below electric furnaces will be eliminated by the end of 2011.展开更多
Running Situation of China＇ s Nonferrous Industry in First Half of Year 2009 The output of ten nonferrous metals of China in first half of year 2009 decreased to 11.7 million tons decreasing 5.1% year on year, in wh...Running Situation of China＇ s Nonferrous Industry in First Half of Year 2009 The output of ten nonferrous metals of China in first half of year 2009 decreased to 11.7 million tons decreasing 5.1% year on year, in which that in June was 2.21 million tons decreasing 1.3% year on year. The value added of China＇ s nonferrous industry decreased 6.9% year on year.展开更多
文摘NiCrAlY+(ZrO_2+Y_2O_3)thermal barrier coating was prepared on the surface of refractory steel 1Cr18Ni9Ti with plasma spraying technique. The phases and microstructure of the thermal barrier coating were determined by scanning electron microscopy(SEM) and X-ray diffraction(XRD). The results show that the bonding between thermal barrier coating and substrate is sound. The surface hardness of 1Cr18Ni9Ti reaches up to 1000 HV, but that of substrate is only 300HV. The patterns sprayed with CoNiCrAlY+(ZrO_2+Y_2O_3) ceramic coating have a good heat insulation effect at 800℃ for heat insulation temperature difference reaches 54℃, which increases the operating temperature and service life of refractory steel.
文摘Outdated Capacity to Be Eliminated The iron and steel capacity has reached 660 million tons in China, but the actual market requirement is only 470 million tons, so the excess-capacity is 190 million tons. National Development and Reform Commission of China declared the new capacity and expansion capacity in iron and steel industry will not be authorized. 400 m^3 or below blast furnaces and converters and 30 t or below electric furnaces will be eliminated by the end of 2011.
文摘Running Situation of China＇ s Nonferrous Industry in First Half of Year 2009 The output of ten nonferrous metals of China in first half of year 2009 decreased to 11.7 million tons decreasing 5.1% year on year, in which that in June was 2.21 million tons decreasing 1.3% year on year. The value added of China＇ s nonferrous industry decreased 6.9% year on year.
