Constituent phase of the Co50 coatings mainly are γ-Co, (Co,Fe)7C3 and which of the Cr3C2/Co are mainly γ-Co,Cr7C3,Cr23C6 and Cr3C2. Micro-hardness and wear resistance of the Cr3C2/Co coatings are much higher than that of the Co50 .
The effects of Co content in B constituent for MmBx alloys and stoichiometric ratio x for Mm ( Ni0.70Co0.16Mn0.08Al0.06),alloys on hydrogen-absorbing equilibrium pressure of P-C-T isotherms discharge capacity and cycle life of batteries were investigated.
Its effect is studied by engine tests and it is compared with γ-Al2O3 granule and noble metal catalyst Pd/γ-Al2O3.It is shown by comparisons that LaMnO3/γ-Al2O3 has chemical catalyzing and purifying effects on CO,HC,particulate and organic constituent SOF in particulates,especially on SOF.
The most superior azotizing condition was determined by orthogonal experiment,which is space velocity at 70×103 h-1,H2/N2 was 4.0 ∶ 1,nitriding temperature was 650 ℃,temperature program speed was 1.2 ℃/min,the active constituent content was 10%.
The considerable reduction in concrete strength (except for the case of HF acid) can be basically attributed to the significant decrease in concrete of such constituent elements as Ca(Al 2Si 2O 8). 4H 2O, Na 6AlSi 2O 7, and Ca 2SiO 4.4H 2O, etc.
the constituent ratio of single antimicrobial usage increased from 58.99% to 66.50%,while the constituent ratio of two antimicrobial combined and three combined antimicrobial usage dropped from 34.62% to 30.45% and 6.39% to 3.05% respectively(P<0.05).