Glass coating and film technology for reducing platinum rhodium alloy bushing plate loss

A technology of glass coating and platinum-rhodium alloy, which is applied to coatings, devices for coating liquids on surfaces, and surface pretreatment, etc., which can solve the problems of rising workpiece costs, thermal shock mismatch of coatings, and spraying powder prices. Expensive and other issues, to achieve the effect of reducing volatility

Inactive Publication Date: 2012-02-15
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to literature reports, the current research on thermal shock resistance of coatings is mainly below 850°C. Under this research condition, it is generally accepted by researchers that the thermal shock resistance of coatings mainly depends on the expansion of the coating and the substrate. The mismatch of coefficients, based on this view, the ceramic layer that is selected to withstand thermal shock in the industry at present uses ZrO, which is relatively similar to the expansion coefficient of the metal substrate. 2 As a spray material, but ZrO 2 Spraying powder is expensive, which significantly increases the cost of the workpiece

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1 , glass coating and coating process to reduce loss of platinum-rhodium alloy bushing plate

[0029] Preparation of sol: Weigh glass chemical components and white Suzhou soil in a mass ratio of 15:1, mix and stir with distilled water and absolute ethanol, stir the solution until transparent, take it out after 6 hours in a water bath at 35°C, store at room temperature, and wait for use . The weighed amount of glass chemical components is shown in Table 1:

[0030] Table 1 Glass chemical composition (parts by weight)

[0031] Experiment number 1 2 3 4 5 6 SiO 2 45 47 49 51 53 55 Al 2 o 3 39.5 38 37.5 37 35.5 35 Na 2 o 11.5 10.5 8.5 7.5 6.5 6 CaO 2 2.1 1.9 2.2 1.5 1 MgO 1.2 1.3 1 1.1 2.4 2 Li 2 o 0.3 0.5 0.4 0.5 0.3 0.4 La 2 o 3 0.5 0.6 0.7 0.7 0.8 0.6

[0032] Put the coating sample into a self-made resistance furnace for drying. The drying mechanism is: 3°C...

Embodiment 2

[0036] Example 2 , Weigh the glass chemical components and white Suzhou soil according to the mass ratio of 13:1, weigh the glass chemical components according to Table 1, and the experiment numbers are 7, 8, 9, 10, 11, 12. The specific implementation method is the same as that of Example 1. After working for one year, the bushing was disassembled and weighed. The specific results are shown in Table 3.

[0037] Table 3 loss of bushing plate / g

[0038] Experiment number 7 8 9 10 11 12 loss 40.7 31.5 33.2 35.8 36.5 43.6

Embodiment 3

[0039] Example 3 , Weigh the glass chemical components and white Suzhou soil according to the mass ratio of 11:1, weigh the glass chemical components according to Table 1, and the experiment numbers are 13, 14, 15, 16, 17, 18. The specific implementation method is the same as that of Example 1. After working for one year, the bushing was disassembled and weighed. The specific results are shown in Table 4.

[0040] Table 4 Loss of bushing plate / g

[0041] Experiment number 13 14 15 16 17 18 loss 29.4 31.3 26.5 27.7 25.2 30.1

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Abstract

A glass coating for reducing platinum rhodium alloy bushing plate loss provided by the invention comprises glass and Suzhou soil in a mass ratio of 9-15:1; a film technology employs a sol-gel film method, which is simple; and the coating raw material is cheap and with a utilization rate. Small size (nanometer level) oxide particles with high specific surface area and high activity can be obtained; and the coating has high uniformity, and multiple ingredient uniform oxide coating is easily prepared.

Description

technical field [0001] The invention relates to a glass coating composition with high temperature resistance, erosion resistance and simple operation, that is, a glass coating and a coating process for reducing loss of a platinum-rhodium alloy bushing. Background technique [0002] The content of platinum group metals in the ore is generally very low, only a few grams per ton. Platinum and rhodium metal is one of the strategic resources that China is extremely short of. Platinum rhodium precious metals are widely used in the glass fiber industry for their high temperature corrosion resistance, good oxidation resistance at high temperatures, creep resistance under high temperature load conditions, and small wetting angle to glass liquid. in production. [0003] The prices of precious metals in the international market continued to rise, among which the prices of platinum and rhodium reached record monthly average prices of 300,000 yuan / kg and 1.42 million yuan / kg respective...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C03C3/095B05D7/24B05D3/02B05D3/14B05C11/08
Inventor 岳云龙张海涛徐兴军屈雅杜钊王馨
Owner UNIV OF JINAN
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