Ngày tải lên: 12/08/2014, 02:22
... Hg -121 2 and ▼ indicates Hg -122 3 phases, respectively. The X-ray data taken on the optimally and under-doped samples have been clearly shown a mixed phase of HgBa 2 CaCu 2 O 6+x (Hg -121 2) and ... that the grain size of the superconductors and the length of the c-axis of the unit cell of the system are highly effective on both of the first and second chaotic poi...
Ngày tải lên: 21/06/2014, 05:20
Handbook of Lubrication Episode 1 Part 12 docx
... illustrates the range of wear rates typical of various groups of self-lubricating composites, and approximate wear rate correction factors are listed in Table 12. Amore complete account of this procedure, ... ability of MoS 2 and graphite, and some anti-wear additives can even increase wear rates slightly. 70 Second, solid lubricant additions can affect the oxidation stabilit...
Ngày tải lên: 05/08/2014, 09:20