The adhension, solderability, resistance, corrosion protection and high temperature resistance of the non-cyanide silver deposits with thickness of 10～15 μm were tested and compared with those of the cyanide silver deposits with the same thickness.
It was found out by way of orthogonal experiments that under given experimental conditions,the main factors influencing high temperature resistance of epoxy modified silicone resin included,first,dosage of coupling agent,second,dosage of catalyst,and last,proportion of two resins that had little effect.
To meet the high criteria of the manufacturing process technology for high performance,low cost and weight reduction requirements,advanced composite materials have attracted extensive attention and show potential applications because of their excellent characteristics,such as low specific weight,high specific strength and specific modulus,good high temperature resistance,good fatigue resistance and so on.
The mechanical property and resistance to elevated temperatures of geopolymer based lightweight concrete prepared with alkali activated MK and lightweight aggregate are very well.
The results show that when C/B is suitable,geopolymer based lightweight concrete has many merits such as high strength、high resistance to elevated temperatures and light weight,so it can be used for the building engineering with fire incipient fault or under high-temperature work environment.
This paper systematically studies the basic process of synthesizing Sr2MgSi_2O_7:Eu~2+,Dy~3+ phosphors; Discussing its properties of chemical stability and be capable of enduring high temperature and water.
Stainless steel 000Cr10Ni14Si5 has good mechanical properties, heat-resistance and corrosion-resistance. However, the material has poor weldability and high technology requirement.
V_f value 470 mL and t__(1/2) value as high as 50 h are observed at room temperature for PMP/SS/TEA/BT (12.5/2.0/10/40 g/L) solution after rolling at 200℃ in 16 h.
crosslinking caused a significant effect in improving high temperature resistance for the blend film with draw ratio of 20 in the case of irradiation doses less than 20 Mrad.
The rare earth metals (RE) in as material additives primarily improve the creep resistance, corrosion resistance and high temperature resistance of materials.
It is found that acceptable quantum yields of fluorescence with the retention of a high heat resistance of glass-ceramics can be achieved by decreasing the volume fraction of the crystalline phase.
Coatings on graphite with a high heat resistance at a temperature of 1400°C in an air atmosphere are prepared on the basis of the ZrB2-MoSi2-SiO2 system.
The proposed process was successfully used for the utilization of the ecotoxicants polychlorobiphenyls used as dielectrics with a very high heat resistance.
Two layers of thermal field were found: a high heat resistance layer with a high temperature gradient, and a layer with a small or even zero temperature gradient.
As a result of treatment with NP40 the extracts from both wild-type and mutant lines contain two additional active phosphatase forms which can be characterized by their high heat resistance and low pI values.
Alkali-stability is associated with a remarkable resistance to elevated temperatures (half-life of 60?min at 52.5°C) and to high concentrations of urea (up to 3?M).
耐高温性能
high temperature resistance
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