1997
DOI: 10.1149/1.1837598
|View full text |Cite
|
Sign up to set email alerts
|

A Raman Study of Diamond Film Growth on Co‐Cemented Tungsten Carbide

Abstract: Phase purity and crystallinity of diamond films grown by hot filament chemical vapor deposition on ISO-grade K10 cemented carbide [94.2 weight percent (w/o) WC-5.8 w/o Co] were studied by Raman spectroscopy as a function of substrate temperature, gas phase composition, and substrate pretreatments. High-quality diamond films were grown using 0.5% CH4/H2 in a rather narrow range of substrate temperatures (750 to 760°C). In all the deposited coatings, the firstorder Raman band of diamond is detected at 1337 cm . … Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1
1

Citation Types

0
4
0

Year Published

1999
1999
2023
2023

Publication Types

Select...
9

Relationship

2
7

Authors

Journals

citations
Cited by 11 publications
(4 citation statements)
references
References 8 publications
0
4
0
Order By: Relevance
“…The frequency of this peak is about 5 cm Ϫ1 blue shifted with respect to the value of natural diamond (1332.4 cm Ϫ1 at atmospheric pressure and 25ЊC). This implies that a 1.8 Ϯ 0.1 GPa residual compressive stress was present in the deposited diamond, [25][26][27] which did not depend on the substrate temperature and methane concentration. Figure 11 shows the Raman spectra of diamond films grown at 750ЊC (0.5% CH 4 ) on S, SE, and SMP pretreated substrates.…”
Section: Resultsmentioning
confidence: 94%
“…The frequency of this peak is about 5 cm Ϫ1 blue shifted with respect to the value of natural diamond (1332.4 cm Ϫ1 at atmospheric pressure and 25ЊC). This implies that a 1.8 Ϯ 0.1 GPa residual compressive stress was present in the deposited diamond, [25][26][27] which did not depend on the substrate temperature and methane concentration. Figure 11 shows the Raman spectra of diamond films grown at 750ЊC (0.5% CH 4 ) on S, SE, and SMP pretreated substrates.…”
Section: Resultsmentioning
confidence: 94%
“…The existence of these modes was ascribed to the formation of transpolyacetylene (TPA) chain in the grain boundaries, which is a familiar characteristic of NCD coatings. A cauliflower type of growth is generally seen with the NCD coatings [36][37][38][39]. As for boron-doped diamond films, 1332 cm -1 peak changes towards an asymmetric Fano effect.…”
Section: Raman Spectroscopy and Residual Stress Analysismentioning
confidence: 90%
“…The gas composition and flow rate were regulated by digital mass flow controllers (Model 258/259, coupled with Model 247A control unit, MKS Instruments, Andover, MA). The substrate temperatures investigated (750°and 940°C) were selected based on the results of a previous study; 13 the deposition temperatures used allowed the growth of high-purity diamond coatings under the present experimental conditions. The deposition times were varied between 10 and 180 min, to allow study of the kinetics of the surface evolution of the substrate during the early stages of the process.…”
Section: (2) Diamond Depositionmentioning
confidence: 99%