Disruption erosion tests on La2O3 containing tungsten material

Disruption erosion tests on La2O3 containing and pure tungsten materials we re performed by the electron beam irradiation facility. As a result, it was found that the disruption erosion of La2O3 - W evaluated from the weight l oss was three times larger than that of pure - W. The surface observations suggest that the splashing of the melted layer during the electron beam irr adiation occurs only for the La2O3 - W, which results in the larger weight loss in disruption erosion. This is considered to be due to the lower melti ng point of the added La2O3.