JPS6164867A - Glass reinforced thermal spraying material - Google Patents

Abstract

PURPOSE:To provide a titled thermal spraying material which forms a thermally sprayed film having high density and wear resistance by mixing and pelletizing ceramic powder having a high m.p. and glass powder having a low m.p. at a specific ratio. CONSTITUTION:This glass reinforced thermal spraying material is constituted by mixing and pelletizing 70-90wt% ceramic powder having >=1,600 deg.C m.p. and 10-30% glass powder having <=900 deg.C m.p. The above-mentioned thermal spraying material is made dense and wear resistant by reinforcing the ceramic thermal spraying material with a glassy material. Alumina, zirconia, magnesia spinel, etc. are adequately used as the above-mentioned ceramic powder and borosilicate glass powder is adequately used for the glass powder. The thermally sprayed film formed by using such thermal spraying material has the structure in which the glass phase having the low m.p. and low viscosity is packed into the pores generated as a result of melting and lamination of the ceramic particles and in which the ceramic phase and the glass phase are unitized by constituting separate phase to make the material denser.

Description

【発明の詳細な説明】 で強化し、緻密にした耐摩耗性の溶射材に関する。[Detailed description of the invention] It relates to abrasion-resistant thermal sprayed materials that are reinforced and densified.

従」Ｕ丸歯 溶射材はアルミナ、ジルコニア等のセラミック粉末、高
融点の金属粉末、これらの混合物が一般的である。これ
らの溶射材の溶射被膜の構造は溶射フレーム中で溶融し
た粒子が積層したものであるが、積層間にはかなりの気
孔が存在しているため強度や耐摩耗性は成形体に較べ非
常に劣っている。The thermal spraying materials for round teeth are generally ceramic powders such as alumina and zirconia, high melting point metal powders, and mixtures thereof. The structure of the thermal spray coating of these thermal spray materials is that particles melted in the thermal spray flame are laminated, but since there are considerable pores between the laminated layers, the strength and abrasion resistance are much lower than that of molded products. Inferior.

良！！Ｌ！！２ＪＬ部 本発明は溶射被膜が緻密で耐摩耗性に優れた溶射材を提
供することを目的とする。good! ! L! ! 2JL Section An object of the present invention is to provide a thermal spray material with a dense thermal spray coating and excellent wear resistance.

ｌ豆立ｌ真−１１ 本発明はアルミナ、ジルコニア等ノ融点が１６００℃以
上のセラミック粉末とホウケイ醜ガラス等の融点が９０
０°Ｃ以下のガラス粉末とを前者７０〜９０重量％（以
下％は重量基準）、後者ｌＯ〜３０％に混合し、造粒し
た溶射材である。The present invention uses ceramic powder such as alumina, zirconia, etc., which has a melting point of 1600°C or higher, and porcelain glass, etc., which has a melting point of 90°C.
It is a thermal spray material made by mixing 70 to 90% by weight of the former and 10 to 30% of the latter and granulating the glass powder at 0°C or lower.

この溶射材を用いた溶射被膜はセラミック粒子が溶融し
、積層して生じた気孔に低融点、低粘度のガラス相が充
填した構造をなしている。セラミック相とガラス相とが
別々の相をなしていることが一つの特徴である。そのた
めにはセラミック材は融点が高く、ガラス材は融点が低
いことが必要である０両者の融点の差が小さいと両者か
に充填されるものであり、そのため低粘度であることが
必要である。A thermal spray coating using this thermal spray material has a structure in which ceramic particles are melted and stacked to form pores, which are filled with a glass phase having a low melting point and low viscosity. One of the characteristics is that the ceramic phase and the glass phase are separate phases. To do this, the ceramic material must have a high melting point, and the glass material must have a low melting point.0 If the difference in melting point between the two is small, both will be filled, so it is necessary to have a low viscosity. .

本発明で使用できる融点が１９００　’Ｏ以上のセラミ
ック材料としてはアルミナ、ジルコニア、マグネシャス
ピネノイＭｇ０−ＡＲ，ｚ０３等）、チタン酸アルミ、
ムライト等を挙げることができる。Ceramic materials with a melting point of 1900'O or higher that can be used in the present invention include alumina, zirconia, magnetic spinenoy (Mg0-AR, z03, etc.), aluminum titanate,
Mullite etc. can be mentioned.

融点が９００℃以下で本発明に好適なガラス材料として
はホウケイ酸ガラス、リン酸ガラスである。これらの組
成範囲を示せば、 ホウケイ酸ガラス Ｂ２　０３　　　　　２０〜５０％ ５ｉ０２　　　　　　０〜５０％ ＣａＯ５〜１５％ Ｎａ２Ｏ５〜２５％ Ａ又　２０３　　　　　　　＜５％ ＰｂＯ５〜５０％ リン酸ガラス Ｐ２Ｏ５３０〜７０％ Ｃａ０　　　　　　５〜１５％ Ｎａ２Ｏ５〜２５％ ＢａＯ１０〜５０％ 両者の混合割合はガラス成分が１０％未満（セラミック
成分が９０％を越）では気孔を充填し、被膜を緻密にす
るに不十分であり、３０％を越えると被膜の抗折力、耐
摩耗性等の特性が低下する。Glass materials having a melting point of 900° C. or less and suitable for the present invention include borosilicate glass and phosphate glass. These composition ranges are as follows: borosilicate glass B2 03 20-50% 5i02 0-50% CaO 5-15% Na2O 5-25% A or 203 <5% PbO 5-50% phosphate glass P2O 530-70% Ca0 5- 15% Na2O5-25% BaO10-50% The mixing ratio of both is that if the glass component is less than 10% (ceramic component is more than 90%), it is insufficient to fill the pores and make the coating dense. If it exceeds this, the properties such as transverse rupture strength and abrasion resistance of the coating will deteriorate.

両者の混合、造粒についてはセラミック粉末は１０ｐｍ
以下に粉砕し、またガラスは溶融して製造したフリット
を粉砕してＬＯ４ｒｎ以下程度にし、これらをよく混合
し、ＰＶＡ、ＣＭＣ，コンスターチ等を１次バインダに
して造粒する。造粒は例えばスプレードライヤー、ヘン
シルミキサー等により行なう０粒子の大きさは水プラズ
マ装置の場合８８〜１０ｐｍ、ガスプラズマ装置の場合
５３〜ｌＯ用ｍ程度が適する。For mixing and granulation of both, ceramic powder is 10pm.
The glass is pulverized as follows, and the frit produced by melting the glass is pulverized to about LO4rn or less, mixed well, and granulated using PVA, CMC, cornstarch, etc. as a primary binder. Granulation is carried out using, for example, a spray dryer, a Henshil mixer, etc. The size of the zero particles is suitably 88 to 10 pm in the case of a water plasma device, and 53 to 10 m in the case of a gas plasma device.

１厘１ セラミック材として電融アルミナ（ＡＪ１２０コ９７％
）、ガラス材として次の組成のホウケイ酸ガラスを用い
た。1 liter 1 Electro-fused alumina (AJ120 97%) as a ceramic material
), borosilicate glass having the following composition was used as the glass material.

Ｂ、２０３　３７．１％　　　Ｎａ２Ｏ１５，８％Ｓ　
ｉ　０２　３７．Ｉ　　　　　Ａ１２０３　　１ＪＣａ
Ｏ７，９Ｋ２Ｏ０，７ 電融アルミナは１０ｇａ＋以下に粉砕、ガラスは工ＯＪ
Ｌｍ以下に粉砕し、前者９０％、後者２０％の割合に混
合し、コーンスターチを一次バインダーとし。B, 203 37.1% Na2O15,8%S
i 02 37. I A1203 1JCa
O7,9K2O0,7 Fused alumina is crushed to 10ga+ or less, glass is milled OJ
Pulverized to less than Lm and mixed at a ratio of 90% of the former and 20% of the latter, using cornstarch as the primary binder.

スラリー濃度３０％、スラリー供給量２０文／＋ｉｎ、
アトマイザ−回転数１２００Ｏｒ、ｐ、Ｉｌ、、乾ｔｌ
＆温度ｆ５０’ｃで、８８〜ＩＯＨの粒子に造粒した。Slurry concentration 30%, slurry supply amount 20 sentences/+in,
Atomizer - rotation speed 1200Or, p, Il, dry tl
& granulated into particles of 88 to IOH at a temperature of f50'c.

この粒子を用い、公知の水プラズマ溶射機により５Ｓ−
４１基材上に溶射し、その被膜の特性を測定した。比較
として電融アルミナの溶射被膜を示す。Using these particles, 5S-
No. 41 was thermally sprayed onto a substrate, and the properties of the coating were measured. For comparison, a sprayed coating of fused alumina is shown.

本発明　　　　電融アルミナ 真比重　３．２１　　　　３．９１ 見掛比重　　３．１８　　　　　　３．Ｂ：１余気孔率
　　８．９　　　　　　　１２．２開気孔率　　５．５
　　　　　　　８．９抗折力　３．９１　ｋｇ／ｌＩｍ
’　　　１．９９摩擦摩耗　　０．００６　　ｇ／ｃｒ
ｎ’　　　　０．２３０摩擦摩耗はポール板に圧子をと
りつけ 回転させ被膜の重量減少を求めた。Present invention Fused alumina True specific gravity 3.21 3.91 Apparent specific gravity 3.18 3. B: 1 remaining porosity 8.9 12.2 open porosity 5.5
8.9 Transverse rupture strength 3.91 kg/lIm
' 1.99 Frictional wear 0.006 g/cr
n' 0.230 Frictional wear was measured by attaching an indenter to a pole plate and rotating it to determine the weight loss of the coating.

え監立分」 本発明によればセラミックのもつ特性を殆んど失なうこ
となく、上記結果が示すように抗折力、＃摩耗性を大幅
に改善することができる。According to the present invention, transverse rupture strength and abrasion resistance can be significantly improved, as shown by the above results, without losing much of the characteristics of ceramics.

Claims (3)

【特許請求の範囲】[Claims] （１）融点が１６００℃以上のセラミック粉末７０〜９
０重量％と融点が９００℃以下のガラス粉末１０〜３０
重量％とを混合、造粒してなるガラス強化 溶射材。(1) Ceramic powder 70-9 with a melting point of 1600°C or higher
0% by weight and a glass powder with a melting point of 900°C or less 10-30
A glass-reinforced thermal spray material made by mixing and granulating % by weight. （２）セラミック粉末がアルミナ、ジルコニア、マグネ
シヤスピネルである特許請求の範囲第１項記載のガラス
強化溶射材。(2) The glass-reinforced thermal spray material according to claim 1, wherein the ceramic powder is alumina, zirconia, or magnesia spinel. （３）ガラス粉末がホウケイ酸ガラス粉末である特許請
求の範囲第１項記載のガラス強化溶射材。(3) The glass reinforced thermal spray material according to claim 1, wherein the glass powder is borosilicate glass powder.