Microstructures and Mechanical Properties of CrN Coatings Deposited by HIPIMS

2016 ◽  
Vol 836-837 ◽  
pp. 234-241
Author(s):  
Long Sheng Fu ◽  
Wei Dai ◽  
Qi Min Wang ◽  
Kun Zeng
Keyword(s):  
Mechanical Properties ◽  
Bias Voltage ◽  
Printed Circuit Board ◽  
Cutting Tools ◽  
Circuit Board ◽  
Negative Bias ◽  
Negative Bias Voltage ◽  
Columnar Grains ◽  
Crn Coatings ◽  
Excellent Tool

CrN coatings have been widely used in many industrial fields, such as cutting tools, moulds, mechanical components. In this work, CrN coatings were deposited using a high power impulse magnetron sputtering (HIPIMS) with various negative bias voltages. The composition, microstructure, and mechanical properties of the coatings were studied using X-ray diffractometer, scanning electron microscope (SEM) and nanoindenter. The cutting performance of the micro drills coated in CrN was also investigated by high speeding dry drilling printed circuit board (PCB). The results show that the bias voltage has significant influences on the microstructure and properties of the as-deposited films. Increasing negative bias voltages resulted in the microstructures refining of the CrN coatings with columnar grains. Further increasing the negative bias voltage caused the formation of defects in CrN. With optimization of the negative bias voltage, the micro-drills with CrN deposited by HIPIMS exhibited an excellent tool life comparing with the uncoated one.

scholarly journals Effect of Bias Voltage on Mechanical Properties of HiPIMS/RFMS Cosputtered Zr–Si–N Films

Materials ◽  
2019 ◽  
Vol 12 (17) ◽  
pp. 2658 ◽  
Author(s):  
Yung-I Chen ◽  
Yu-Zhe Zheng ◽  
Li-Chun Chang ◽  
Yu-Heng Liu
Keyword(s):  
Mechanical Properties ◽  
Magnetron Sputtering ◽  
Bias Voltage ◽  
Elastic Recovery ◽  
High Hardness ◽  
Chemical Compositions ◽  
Negative Bias ◽  
Rf Power ◽  
Negative Bias Voltage ◽  
Si Content

Zr–Si–N films with atomic ratios of N/(Zr + Si) of 0.54–0.82 were fabricated through high-power impulse magnetron sputtering (HiPIMS)–radio-frequency magnetron sputtering (RFMS) cosputtering by applying an average HiPIMS power of 300 W on the Zr target, various RF power levels on the Si target, and negative bias voltage levels of 0–150 V connected to the substrate holder. Applying a negative bias voltage on substrates enhanced the ion bombardment effect, which affected the chemical compositions, mechanical properties, and residual stress of the Zr–Si–N films. The results indicated that Zr–Si–N films with Si content ranging from 1.4 to 6.3 atom % exhibited a high hardness level of 33.2–34.6 GPa accompanied with a compressive stress of 4.3–6.4 GPa, an H/E* level of 0.080–0.107, an H3/E*2 level of 0.21–0.39 GPa, and an elastic recovery of 62–72%.

Effects of Negative Bias Voltage on Structure and Mechanical Properties of DLC Films Synthesized by FCVA Deposition

2011 ◽  
Vol 287-290 ◽  
pp. 2203-2206 ◽  
Author(s):  
Feng Wen ◽  
N. Huang ◽  
F.J. Jing ◽  
H. Sun ◽  
Y. Cao
Keyword(s):  
Mechanical Properties ◽  
Bias Voltage ◽  
Photoelectron Spectroscopy ◽  
Vacuum Arc ◽  
Negative Bias ◽  
Micro Hardness ◽  
Negative Bias Voltage ◽  
X Ray ◽  
Composition And Structure ◽  
Pin On Disc

Diamond-like carbon (DLC) films have been given great attention in the last twenty years and applied in many fields due to its super mechanical property. In this paper, DLC films were prepared by filter cathodic vacuum arc (FCVA) deposition under different negative bias voltage. No spalling was found in all of as-prepared DLC films. X-ray photoelectron spectroscopy (XPS), Raman spectra were employed to analyze composition and structure, the results showed that as-prepared DLC films had tendency of graphite with increase of negative bias voltage. Mechanical properties were characterized by micro-hardness and pin-on disc tests, the results showed that the hardness of DLC films decreased with bias voltage, but still kept good wear resistant.

scholarly journals Shear Strength Degradation Modeling of Lead-Free Solder Joints at Different Isothermal Aging Conditions

2021 ◽  
Vol 18 (3) ◽  
pp. 137-144
Author(s):  
Dania Bani Hani ◽  
Raed Al Athamneh ◽  
Mohammed Aljarrah ◽  
Sa’d Hamasha
Keyword(s):  
Mechanical Properties ◽  
Shear Strength ◽  
Printed Circuit Board ◽  
Solder Joints ◽  
Constant Strain Rate ◽  
Circuit Board ◽  
Sac305 Solder ◽  
Aging Conditions ◽  
Osp Surface Finish ◽  
Shear Strength Degradation

Abstract SAC-based alloys are one of the most common solder materials that are utilized to provide mechanical support and electrical connection between electronic components and the printed circuit board. Enhancing the mechanical properties of solder joints can improve the life of the components. One of the mechanical properties that define the solder joint structure integrity is the shear strength. The main objective of this study is to assess the shear strength behavior of SAC305 solder joints under different aging conditions. Instron 5948 Micromechanical Tester with a customized fixture is used to perform accelerated shear tests on individual solder joints. The shear strength of SAC305 solder joints with organic solderability preservative (OSP) surface finish is investigated at constant strain rate under different aging times (2, 10, 100, and 1,000 h) and different aging temperatures (50, 100, and 150°C). The nonaged solder joints are examined as well for comparison purposes. Analysis of variance (ANOVA) is accomplished to identify the contribution of each parameter on the shear strength. A general empirical model is developed to estimate the shear strength as a function of aging conditions using the Arrhenius term. Microstructure analysis is performed at different aging conditions using scanning electron microscope (SEM). The results revealed a significant reduction in the shear strength when the aging level is increased. An increase in the precipitates coarsening and intermetallic compound (IMC) layer thickness are observed with increased aging time and temperature.

The effect of substrate bias on the characteristics of CrN coatings deposited by DC-superimposed HiPIMS system

2017 ◽  
Vol 31 (16-19) ◽  
pp. 1744032 ◽  
Author(s):  
X. Zuo ◽  
F. Xia ◽  
D. Zhang ◽  
P. L. Ke ◽  
Q. M. Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Bias Voltage ◽  
Indentation Test ◽  
Grain Structure ◽  
Substrate Bias ◽  
Cross Sectional ◽  
Microstructure And Mechanical Properties ◽  
Columnar Grain ◽  
Influence Of Substrate ◽  
Crn Coatings

Chromium nitride coatings were prepared by reactive DC-superimposed high-power-impulse magnetron sputtering (HiPIMS) system. The influence of substrate bias on the microstructure and mechanical properties of CrN coatings was investigated. XRD and cross-sectional SEM were utilized to characterize the film structures. Mechanical properties were characterized by nanoindentation and Vickers indentation test. The results revealed that the microstructure and mechanical properties of CrN coatings were affected by bias voltage. The CrN coatings exhibited dense and fine columnar grain structure with the hardness of about 18.7 GPa. The fracture toughness of CrN coatings was around 3.16 MPa ⋅ m[Formula: see text]. However, further increase of the bias voltage from −250 V to −300 V led to the degradation of coating properties.

Zirconia Coatings Deposited by Inductively Coupled Plasma Assisted CVD

1998 ◽  
Vol 555 ◽  
Author(s):  
P. Colpo ◽  
G. Ceccone ◽  
B. Leclercq ◽  
P. Salvatore ◽  
F. Rossi
Keyword(s):  
Thin Films ◽  
Bias Voltage ◽  
Inductively Coupled Plasma ◽  
Gas Mixture ◽  
Negative Bias ◽  
Negative Bias Voltage ◽  
Inductively Coupled ◽  
Deposition Parameters ◽  
Coating Characteristics ◽  
Dc Bias

AbstractThin films of zirconia have been deposited by an Inductively Coupled Plasma Assisted CVD (ICP-PACVD) reactor from tetra (tert-butoxy)-zircon precursor diluted in Ar and O2 gas mixture. An independent RF generator is used to control carefully the substrate negative bias voltage during the deposition. Zirconia thin films, with thickness up to 10 microns were deposited on Si (100) polished wafers under different plasma conditions. Correlation between deposition parameters, and microstructure has been established showing that the ion bombardment has a large influence on the coating characteristics. In particular, the possibility of tailoring mechanical properties of the films by controlling the applied DC bias voltage is discussed.

The effect of applied substrate negative bias voltage on the structure and properties of Al-containing a-C:H thin films

2008 ◽  
Vol 202 (12) ◽  
pp. 2684-2689 ◽  
Author(s):  
Guangan Zhang ◽  
Pengxun Yan ◽  
Peng Wang ◽  
Youming Chen ◽  
Junying Zhang ◽  
...  
Keyword(s):  
Thin Films ◽  
Bias Voltage ◽  
Negative Bias ◽  
Structure And Properties ◽  
Negative Bias Voltage
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