CN105039966A - Anti-tensile metallic nickel ceramic coating and manufacturing method thereof - Google Patents

Abstract

The invention discloses an anti-tensile metallic nickel ceramic coating. The surface of matrix metal is coated with the ceramic coating manufactured by selecting metallic nickel as a metallic matrix and adopting refractory materials such as cobaltous oxide and molybdenum boride as ceramic phases. Alloying elements in the matrix metal diffuse towards the interface and are subjected to interfacial reactions with substances such as NiO in the coating, wherein one interfacial reaction follows the equation that NiO+M->MO+Ni. Reduced and precipitated active nickel atoms and the matrix metal M form Ni-M metallic bonds. Thus, the adherence of the metallic ceramic coating and the matrix metal is improved. Moreover, because rare-earth nano cerium dioxide is high in activity, the atomic orbital interaction of the rare-earth nano cerium dioxide with absorbed molecules is improved, the reactions are enhanced, adherence can be built soon, and added boron powder and nickel powder are combined so that the permeability of the coating can be improved. The manufactured coating has the strength and toughness of the metal, is anti-tensile, also has the high-temperature-resistant, antioxidant, abrasion-resistant and corrosion-resistant advantages of ceramic materials, and is a novel composite material.

Description

Metallic nickel ceramic coating of a kind of stretch-proof and preparation method thereof

Technical field

The present invention relates to metal ceramic coating material technical field, metallic nickel ceramic coating being specifically related to a kind of stretch-proof and preparation method thereof.

Background technology

Ceramic coating material is the stupalith being subject to extensive concern in recent years, and traditional stupalith has larger fragility, is unfavorable for the further processing of stupalith, also causes stupalith to show slightly not enough in the performance of numerous areas.Metal-ceramic coating is the obdurability that a kind of existing metal is good, has again the compound coating of the advantage such as high temperature resistant, wear-resistant, corrosion-resistant of pottery.Therefore, metal-ceramic coating obtains important application in many fields such as Aeronautics and Astronautics, such as bears at a high speed, that high-temperature fuel gas washes away etc. is complicated, the rocket engine components of bad working environments condition, can obtain effective protection by metallizing ceramic coating.There is many defects such as function singleness cost is high, toughness is little, intensity is low, coatability is poor in actual applications in the metal-ceramic coating prepared in prior art, limit use range and the Application Areas of metal-ceramic coating, be unfavorable for the realization of the target of industry energy conservation Green Development.

Summary of the invention

Object of the present invention metallic nickel ceramic coating being just to provide a kind of stretch-proof and preparation method thereof, to overcome the deficiencies in the prior art.

The object of the present invention is achieved like this:

A kind of metallic nickel ceramic coating of stretch-proof, it is characterized in that, be made up of the raw material of following weight part: nano ceric oxide 15-20, nickel powder 40-50, rose vitriol 4-8, boron powder 15-19, cobalt oxide 12-14, molybdenum boride 20-24, ethylene waxes powder 6-9, basalt fibre 5-7, bauxitic clay 22-30, epoxy resin latex 7-10, octyl salicylate 8-11, suitable quantity of water.

The preparation method of the metallic nickel ceramic coating of described a kind of stretch-proof, is characterized in that comprising the following steps:

(1) by nano ceric oxide in 625-750 DEG C of pyroprocessing 30-50 minute, rapidly through cooled with liquid nitrogen to room temperature, add rose vitriol and suitable quantity of water ultrasonic oscillation 20-40 minute spraying dry, add octyl salicylate stirring and evenly mixing, stir 5-8h under normal temperature, dry to constant weight;

(2) molybdenum boride is joined in ball mill, spray into vaporific epoxy resin latex and mix thoroughly, add ethylene waxes powder, at normal temperatures, carry out ball milling, mix, break up, obtained modification molybdenum boride;

(3) by modification molybdenum boride, cobalt oxide through 1530-1600 DEG C of high-temperature calcination 2-4 hour, cooling adds basalt fibre and is ground to 200-300 order;

(4) by step (1), (3) reaction mass stirring and evenly mixing, add nickel powder, boron powder in 1100-1200 DEG C of high-temperature calcination 3-6 hour, be cooled to room temperature, put into ball mill and add other remaining component grinding 1-2 hour, add suitable quantity of water and be modulated into slip, be coated on dried sample surfaces, seasoning 24h, then 120 DEG C of dry 12h, fire 5min for last 1050 DEG C.

The present invention has following beneficial effect: the present invention selects metallic nickel to be metal matrix, adopt cobalt oxide, the refractory compounds such as molybdenum boride are coated in base metal surface as the ceramic coating that ceramic phase is obtained, alloying element in matrix metal can spread to interface, occur with materials such as the NiO in coating: the surface reactions such as NiO+M → MO+Ni, active nickel atom and the matrix metal M of precipitate reduction form Ni-M metallic bond, thus improve the adherence of metal-ceramic coating and matrix metal, and rare earth nano cerium dioxide strengthens it to the atomic orbital interaction between binding molecule due to active high energy, promoter action is served to these reactions, adherence can be set up quickly, the boron powder added is combined the perviousness that can strengthen coating with nickel powder, preparation technology of the present invention is simple, prepared coating had not only had the intensity of metal and toughness stretch-proof but also had had the high temperature resistant of stupalith, anti-oxidant, wear-resisting, the advantage such as corrosion-resistant, it is a kind of advanced composite material.

Embodiment

The metallic nickel ceramic coating of described a kind of stretch-proof, it is characterized in that, be made up of the raw material of following weight part: nano ceric oxide 16, nickel powder 47, rose vitriol 7, boron powder 17, cobalt oxide 13, molybdenum boride 22, ethylene waxes powder 6, basalt fibre 7, bauxitic clay 25, epoxy resin latex 8, octyl salicylate 9, suitable quantity of water.

Making method comprises the following steps:

(1) by nano ceric oxide in 625-750 DEG C of pyroprocessing 30-50 minute, rapidly through cooled with liquid nitrogen to room temperature, add rose vitriol and suitable quantity of water ultrasonic oscillation 20-40 minute spraying dry, add octyl salicylate stirring and evenly mixing, stir 5-8h under normal temperature, dry to constant weight;

(2) molybdenum boride is joined in ball mill, spray into vaporific epoxy resin latex and mix thoroughly, add ethylene waxes powder, at normal temperatures, carry out ball milling, mix, break up, obtained modification molybdenum boride;

(3) by modification molybdenum boride, cobalt oxide through 1530-1600 DEG C of high-temperature calcination 2-4 hour, cooling adds basalt fibre and is ground to 200-300 order;

(4) by step (1), (3) reaction mass stirring and evenly mixing, add nickel powder, boron powder in 1100-1200 DEG C of high-temperature calcination 3-6 hour, be cooled to room temperature, put into ball mill and add other remaining component grinding 1-2 hour, add suitable quantity of water and be modulated into slip, be coated on dried sample surfaces, seasoning 24h, then 120 DEG C of dry 12h, fire 5min for last 1050 DEG C.

The technical parameter index of the metallic nickel ceramic coating using the present invention to produce is as follows:

(1) stretch-proof, the strong difficult drop-off of corrosion-resistant, between coating and matrix metal bonding force;

(2) cold-and-heat resistent circulation (room temperature-900 DEG C) ability is good;

(3) initial softening temperature improves 16.4 DEG C.

Claims (2)

1. the metallic nickel ceramic coating of a stretch-proof, it is characterized in that, be made up of the raw material of following weight part: nano ceric oxide 15-20, nickel powder 40-50, rose vitriol 4-8, boron powder 15-19, cobalt oxide 12-14, molybdenum boride 20-24, ethylene waxes powder 6-9, basalt fibre 5-7, bauxitic clay 22-30, epoxy resin latex 7-10, octyl salicylate 8-11, suitable quantity of water.

2. the making method of the metallic nickel ceramic coating of a kind of stretch-proof according to claim 1, is characterized in that comprising the following steps:

(1) by nano ceric oxide in 625-750 DEG C of pyroprocessing 30-50 minute, rapidly through cooled with liquid nitrogen to room temperature, add rose vitriol and suitable quantity of water ultrasonic oscillation 20-40 minute spraying dry, add octyl salicylate stirring and evenly mixing, stir 5-8h under normal temperature, dry to constant weight;

(2) molybdenum boride is joined in ball mill, spray into vaporific epoxy resin latex and mix thoroughly, add ethylene waxes powder, at normal temperatures, carry out ball milling, mix, break up, obtained modification molybdenum boride;

(3) by modification molybdenum boride, cobalt oxide through 1530-1600 DEG C of high-temperature calcination 2-4 hour, cooling adds basalt fibre and is ground to 200-300 order;

(4) by step (1), (3) reaction mass stirring and evenly mixing, add nickel powder, boron powder in 1100-1200 DEG C of high-temperature calcination 3-6 hour, be cooled to room temperature, put into ball mill and add other remaining component grinding 1-2 hour, add suitable quantity of water and be modulated into slip, be coated on dried sample surfaces, seasoning 24h, then 120 DEG C of dry 12h, fire 5min for last 1050 DEG C.