火焰法高钴YG系硬质合金表面沉积复合碳材料(2)

6

:

YG

665

Co

.

.

,

Co.

(

YG3,YG6)

1#2#3#4#

:

60#→260#→400#→600#

Co

→1000#

W2.5

YG8(WC–8%Co)YG16(WC–16%Co)

,

(

2.5μm

)

.

YG8YG16

Co

,

:

20%KOH+20%K3Fe(CN)6

,

Co

η

(Co6W6C

)

,

,

.

.

YG

WC

Co

,

1

WC

,

Co

,

:C2H2,

99.5%;O2,

99.5%;

Co

(CombustionFlameDe-:YG8

YG16.

position

CFD)

:

CFD

.

(1:3)

(

1),

:

Co

.

.

,C2H2

O2

,

,

;

,

,.

,

.

,

.

NO2

.

:

:

800–

,

:

1000

,

150–162.5ml/min,

.

,

40–70mm,

5–40mm

.

;

;

1.

,

C2H2

H

:

YG8YG16

[10,11]

:C2H2→C +C 2+C3+CH+CH2

60#240#400#600#

,

+CH 3+···;H2→2H;H(

–OH,O)+H → →C(dia)+H +H2;

1:3HNO3

5min,

+H2(

H2O–OH);*+–CH 3→C(dia)+3H ;

*+–CH 3

*+C(H

C2)→C(gra);

C(gra)+4H →CH4;C(gra)+–OH→CO+H C(gra)+O→ +CO.

H

,.

;C(dia)

,C(gra)

,

CH xC3

C 2

C (*

);

H

.

XL–30FE

1CFD

(EDAX)

Fig.1Schematicdiagramof ame-depositedcarbon

material

1

,

Y–4Q;

X–ray

T6400

Table1Numberofsampleanditstreatmentprocess

SampleNo

Blademodel

time

1#2#3#4#

YG8YG8YG8YG16

5min15min20min20min

1111

Coremoval

R(C2H2/O2)

time

60min60min60min70minDeposition