Effects of Post Quenching on Mechanical Properties of TiN Film Coated on Steel Substrate

Tanabe, Hirotaka; Miyoshi, Yoshio; Takamatsu, Tohru; Sagara, Shuichi; Kondo, Kazuo; Inoue, Eiichi

doi:10.1299/kikaia.71.95

Cited by 3 publications

(6 citation statements)

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“…The substrate was the same as those used in previous studies (1), (2) . The substrate material was carbon tool steel JIS SK3.…”

Section: Substratementioning

confidence: 99%

“…As described in previous studies (1), (2) , TiN coating was carried out under the conditions listed in Table 2 to obtain TiN film with comparatively high hardness and adhesive strength. These conditions were detemiend based on our previous study (3) of the relationships between the mechanical properties of TiN film and coating conditions.…”

Section: Conditions Of Tin Coatingmentioning

confidence: 99%

“…In our previous studies (1), (2) to investigate the effects of a new treatment called "post-coat substrate quenching" on the mechanical properties of ceramic-coated steel, specimens were prepared in which the substrate (carbon tool steel, JIS SK3) was quenched after TiN coating, and the residual stress, hardness, and adhesive strength of the TiN film and the substrate hardness were investigated. The results obtained from these studies can be summarized as follows.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, for post-coat substrate quenching, the quenched hardness apprpriate to the steel type can always be obtained regardless of whether the deposition temperature is higher than the tempering temperature. Moreover, it is also possible to adjust the substrate hardness by tempering after this treatment, because substrate quenching is performed not before but after coating (1) . In addition, the adhesive strength of TiN film can be improved easily and effectively by post-coat substrate quenching (1) .…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, it is also possible to adjust the substrate hardness by tempering after this treatment, because substrate quenching is performed not before but after coating (1) . In addition, the adhesive strength of TiN film can be improved easily and effectively by post-coat substrate quenching (1) . The disadvantage of this treatment is the decrease in hardness of the TiN film caused by the elevated temperature in the quenching process.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Substrate Quenching after TiN Coating on Tribological Properties of TiN Film

Tanabe

Miyoshi

Takamatsu

et al. 2008

JMMP

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To investigate the effects of post-coat substrate quenching on the tribological properties of TiN film, a specimen was prepared in which the steel substrate (carbon tool steel, JIS SK3) was quenched after TiN coating, and the ball-on-disk type wear test was carried out using a ZrO 2 ball. The delamination initiation life of TiN film was improved by the high adhesive strength of TiN film obtained by post-coat substrate quenching. The specific wear rate was also improved by post-coat substrate quenching, although TiN hardness was lower than that of the conventional type specimen, which was coated with TiN after substrate quenching. The improvement in the specific wear rate could be explained as follows. In the post-coat substrate quenching process, TiN was partly oxidized and titanium oxide, which acted as a lubricant, was formed on the TiN surface. The formation of titanium oxide resulted in a reduction in the friction coefficient and consequently a lower specific wear rate was obtained.

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“…The substrate was the same as those used in previous studies (1), (2) . The substrate material was carbon tool steel JIS SK3.…”

Section: Substratementioning

confidence: 99%

Section: Conditions Of Tin Coatingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Substrate Quenching after TiN Coating on Tribological Properties of TiN Film

Tanabe

Miyoshi

Takamatsu

et al. 2008

JMMP

Self Cite

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Laser Quenching of TiN Coated Steel

et al. 2009

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In a conventional process such as a ceramics thin nlm coating on steel after heat treatment in a furnace， the steel might be so softened by over heating ． TherefQre， we proposed a new method ： heat treatment after a TiN thin 五1m coating process ． HDwever ， thermal deformatiDD could be occurred in this process using a furnace． Therefore ， the present study focuses on the application of ！ aser quenching ． The method causes thermal strain less than that in the furnace quenching ， As experirnen − tal results ， it is revealed tha 亡YAG laser quenching of the TiN film coated steel without film damages is very di伍 cult because the film ox ｛ des and heat abs rption increases immediately during laser irradiation 、 Therefore， we propose some solutiQns ； First ， a Nu gas − assisting laser irradiation is performed to prevent from the oxidation of the TiN 且lm ． Second ， an absorbent is applied on the film in order to increase the thermal absorptiun ． As a result ， it is crarified that the proposed method is efFective to achieve laser quenching of TiN 丘1 【 n coated steels without the film damage ． Moreover ， it is shown that the 丘lm hardness and adhesive strength rnaintains enQugh ill this method ．

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Sliding Damage Evaluation of Coatings for Press Forming Die

Inoue¹,

Suzuki²,

Nishino³

et al. 2011

SOSEI-TO-KAKOU

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In this study, we developed a basic test method of reproducing the slide damage of surface coating layers on dies during actual press working. To simulate actual production processes, dies made of SKD11 on which TiC, TiN, CrN, or VC was coated by PVD, CVD or TRD were used. The sliding damage of the coatings was quantitatively evaluated by this new method, and results showed good agreement with the results of the X-ray diffraction technique and surface roughness measurement. In the case of galvanized blank steel sheets, it was found that the surface damage was caused by the adhesion of zinc onto the coated die. Excellent resistance against the sliding damage was obtained for the VC coating layer by TRD.

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Effects of Post Quenching on Mechanical Properties of TiN Film Coated on Steel Substrate

Cited by 3 publications

References 0 publications

Effects of Substrate Quenching after TiN Coating on Tribological Properties of TiN Film

Effects of Substrate Quenching after TiN Coating on Tribological Properties of TiN Film

Laser Quenching of TiN Coated Steel

Sliding Damage Evaluation of Coatings for Press Forming Die

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