نتایج جستجو برای: ni b tl coating
تعداد نتایج: 987683 فیلتر نتایج به سال:
Leukemic cells from a subset of children with acute lymphoblastic leukemia (ALL) express lymphoid antigens of both T lineage and B lineage, but the clinical significance of this immunophenotype is unknown. We now report the first comprehensive comparison of treatment outcomes among a large cohort of children with CD2+ CD19+ biphenotypic ALL (N = 77), B-lineage ALL (BL) (N = 1,631), or T-lineage...
Electroless composite coatings used for achieving of high hardness, lubrication properties, non-stick surface, abrasive coating applications that by impregnation of soft and hard particles into Ni matrix. Electroless Nickel-phosphorous coatings properties and performance is greatly affected by the amount of phosphorus in them. The phosphor in this coating usually varies from 1 to 13 percent. In...
Modern gas turbine hot sections need to be protected from elevated temperature and damaging environments. This protection starts as a typically two layer coating system, the base layer or bond coat (BC) acts as a corrosion barrier and a kind of buffer for the thermal mismatch between the base material and the second top thermally protective layer or Thermal Barrier Coating (TBC). The BC is norm...
در این تحقیق به بررسی تأثیر عملیات حرارتی بر روی مقاومت به سایش پوشش الکترولس دولایه کامپوزیتی ni-p/ni-b-b4c پرداخته شدهاست. به این منظور، ابتدا پوشش الکترولس نیکل– فسفر با ضخامت 15 میکرون و سپس پوشش الکترولس ni-b-b4c با ضخامت مشابه روی سطح نمونههایی از جنس فولاد ck45 اعمال شد. جهت ارزیابی خواص پوشش دولایه ni-p/ni-b-b4c، پوشش های دولایه نیکل-فسفر/ نیکل- بور با ضخامت یکسان و تک لایه نیکل- بو...
Taylor's law (TL) asserts that the variance in a species' population density is a power-law function of its mean population density: log(variance) = a + b × log(mean). TL is widely verified. We show here that empirical time series of density of the Hokkaido gray-sided vole, Myodes rufocanus, sampled 1962-1992 at 85 locations, satisfied temporal and spatial forms of TL. The slopes (b ± standard ...
The effect of an electroless Ni-Cu-P coating on the fatigue behavior of quenched and tempered CK45 steel has been investigated. The fatigue tests under rotating bending conditions have been conducted in three different conditions of uncoated, as-deposited and shot peened prior to the coating deposition. The results indicate that plating of the base steel leads to a fatigue life reduction. The d...
The time series of water level Titicaca Lake (TL) was compared to the Pacific Decadal Oscillation (PDO) and El Ni?o/Southern (ENSO) indexes between 1914 2014 1969 2014, monthly daily, respectively. Results indicate TL decreased (increased) during positive (negative) PDO phases. ENSO phase results were similar. Positive phases yielded negative (positive) precipitation anomalies concomitant decre...
Graphene can be synthesized from polyacrylonitrile (PAN) polymer through pyrolysis. A metal catalyst such as nickel (Ni) is required for the conversion of the polymer to graphene. The metal catalysts can be placed either atop or underneath the polymer precursor. We observed that spatially non-uniform and disconnected graphene was fabricated when PAN film coated with a Ni layer was pyrolyzed, re...
Platinum is added to thermal barrier coatings (TBCs) as it is observed empirically to extend their lifetime, but the mechanism by which Pt acts is unknown. Since Pt has been proposed to alter diffusivities in NiAl, a key component of TBCs, we use first-principles quantum mechanics calculations to investigate atomic level diffusion mechanisms. Here, we examine the effect of Pt on five previously...
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