Papers by Author: Qiu Lan Wei

Abstract: Ten mixed fuels were prepared using soybean biodiesel and 0# diesel oil with different blend ratios (in vol %). The effects of the blending ratio on physical-chemical properties of biodiesel-diesel mixed fuels and engine power were investigated. The results shows that, with the increase of the blending ratio, a increase in gelatine, carbon residue, acidity and ash content is found and a decrease in sulfur content and mechanical impurities appears. Furthermore, no distinct affection of the blending ratio on engine power is found.

Abstract: In this work, an experiment was performed to demonstrate the possibility of the metallurgical bonding in plasma-sprayed cast iron coatings at high substrate temperature. A quantitative analysis of splat cooling and rapid solidification of cast iron splat is then presented. The effect of the substrate temperature on the development of melt undercooling within the splat is investigated in detail. The results indicated that the initial substrate temperature has a profound effect on the development of melt undercooling in a splat, the splat bottom melt temperature, and the substrate surface temperature. A high initial temperature of the substrate restrains the cooling of the splat and leads to a high melt temperature that may promote the grain growth directly on cast iron substrate surface to form the metallurgical bonding.