Composite wear-resistant member and method for manufacture thereof
View Patent ↗Provided are a composite wear-resistant member which can be manufactured with a lowered sintering temperature, and thus can prevent the carbonization of a material around super hard particles such as diamond; and a method for manufacturing the member. The member, characterized in that it comprises hard particles comprising diamond particles and WC particles and an iron group metal containing phosphorus as a binding material, wherein the content of phosphorus is 0.01 to 2.0 wt % relative to the total weight of the WC particles and the binding material.
1. A composite wear-resistant member comprising:
superhard and hard particles including diamond particles and WC particles; and
a binding material including a phosphorus-containing iron group metal,
wherein a content of phosphorus is 0.05 wt % to 1.0 wt % with respect to a total weight of the WC particles and the binding material.
2. The composite wear-resistant member according to claim 1 , wherein the diamond particles as the superhard particles are individually independently dispersed in the WC particles and the binding material;
a content of the diamond particles is 1 to 60 vol %; and
a content of the binding material is 3 to 30 wt %.
3. The composite wear-resistant member according to claim 1 , wherein the diamond particles as the superhard particles have a diameter of 1000 μm or less.
4. The composite wear-resistant member according to claim 2 , wherein instead of the diamond particles, cBN particles are used.
5. The composite wear-resistant member according to claim 1 , wherein said wear-resistant member is for oil drilling.
6. A method for manufacturing a composite wear-resistant member, comprising:
a step of adjusting a ratio of phosphorus with respect to a material comprising superhard and hard particles including diamond particles and WC particles and a binding material including a phosphorus (P)-containing iron group metal to set an proper sintering temperature to 900° C.-1100° C.; and
a step of performing hot-press sintering or spark plasma sintering.
7. The method for manufacturing the composite wear-resistant member according to claim 6 , wherein said wear-resistant member is for oil drilling.
8. A method for manufacturing a composite wear-resistant member, comprising:
a step of adjusting a ratio of phosphorus with respect to a material comprising superhard and hard particles including diamond particles and WC particles and a binding material including a phosphorus (P)-containing iron group metal to set an proper sintering temperature to 900° C.-1100° C. (except for 1100° C.); and
a step of performing hot press sintering or spark plasma sintering.
9. The method for manufacturing the composite wear-resistant member according to claim 8 , wherein said wear-resistant member is for oil drilling.
10. The method for manufacturing the composite wear-resistant member according to claim 8 , wherein in the step of setting the proper sintering temperature to 900° C.-1100° C., a content of phosphorus is adjusted into 0.05 wt % to 1.0 wt % with respect to a total weight of the WC particles and the binding material.
11. The method for manufacturing the composite wear-resistant member according to claim 8 , wherein a content of the diamond particles is 1 to 60 vol %; and
a content of the binding material is 3 to 30 wt %.
12. The method for manufacturing the composite wear-resistant member according to claims 8 , wherein the diamond particles as the superhard particles have a diameter of 1000 μm or less; and
the WC particles have a diameter of 0.5 to 5 μm.
13. The method for manufacturing the composite wear-resistant member according to claim 8 , wherein instead of the diamond particles, cBN particles are used.
14. The wear-resistant member manufactured by the method according to claim 8 .
15. The composite wear-resistant member according to claim 1 , wherein the content of phosphorus is 0.05 wt % to 0.5 wt % with respect to a total weight of the WC particles and the binding material.
16. The composite wear-resistant member according to claim 1 , wherein fracture toughness value (Klc: Mpa·m 1/2 ) is 9.7 or more and a hardness of a matrix is HRA 87.9 or more.
17. The composite wear-resistant member according to claim 6 , wherein the content of phosphorus is 0.05 wt % to 0.5 wt % with respect to a total weight of the WC particles and the binding material.
18. The composite wear-resistant member according to claim 6 , wherein fracture toughness value (Klc: Mpa·m 1/2 ) is 9.7 or more and a hardness of a matrix is HRA 87.9 or more.
19. The composite wear-resistant member according to claim 8 , wherein the content of phosphorus is 0.05 wt % to 0.5wt % with respect to a total weight of the WC particles and the binding material.
20. The composite wear-resistant member according to claim 8 , wherein fracture toughness value (Klc: Mpa·m 1/2 ) is 9.7 or more and a hardness of a matrix is HRA 87.9 or more.